Embibe Experts Solutions for Chapter: Properties of Bulk Matter, Exercise 1: Level 1

A capillary tube of the radius, $R$ is immersed in water, and water rises in it to a height, $H$. Mass of water in the capillary tube is $M$. If the radius of the tube is doubled, the mass of water that will rise in the capillary tube will now be

Surface tension of liquid is $5 {\mathrm{Nm}}^{-1}$. If a thin film of area $0.02{ \mathrm{m}}^2$ is made in a ring then the surface energy will be :

In a $18 \mathrm{cm}$ long capillary tube water rises upto $16.3 \mathrm{cm}$ height. If tube is cut at a height of $12 \mathrm{cm}$ then:

What is the terminal velocity of air bubble of $1.0 \mathrm{mm}$ in diameter rising in liquid of viscosity $0.85 \mathrm{N}-\mathrm{s} {\mathrm{m}}^{-2}$ and density $900 \mathrm{kg} {\mathrm{m}}^{-3}$ ?(air density $\left.1.293 \mathrm{kg} {\mathrm{m}}^{-3}, g=9 \mathrm{m} {\mathrm{s}}^{-2}\right]$

A liquid cools from $70°\mathrm{C}$ to $50°\mathrm{C}$ in $5$ minutes. Find the time taken by the liquid to cool from $60°\mathrm{C}$ to $50°\mathrm{C}$, if the temperature of the surrounding is constant at $30°\mathrm{C}$.

A body cools from $70°\mathrm{C}$ to $40°\mathrm{C}$ in $5 \min .$ Calculate the time it takes to cool from $60°\mathrm{C}$ to $40°\mathrm{C}.$ The temperature of the surrounding is $20°\mathrm{C}.$

A black body at high temperature emits radiations of